View full lesson: http://ed.ted.com/lessons/human-sperm-vs-the-sperm-whale-aatish-bhatia Traveling is extremely arduous for microscopic sperm -- think of a human trying to swim in a pool made of...other humans. We can compare the journey of a sperm to that of a sperm whale by calculating the Reynolds number, a prediction of how fluid will behave, often fluctuating due to size of the swimmer. Aatish Bhatia explores the great (albeit tiny) sperm s journey. Lesson by Aatish Bhatia, animation by Brad Purnell.

MinutePhysics on permanent magnets: http://www.youtube.com/watch?v=hFAOXdXZ5TM Subscribe to Veritasium: http://bit.ly/SuBVe Support Veritasium- get a t-shirt: http://dft.ba/-vetshirt Subscribe to MinutePhysics: http://bit.ly/1eVPynh Magnetism seems like a pretty magical phenomenon. Rocks that attract or repel each other at a distance - that s really cool - and electric current in a wire interacts in the same way. What s even more amazing is how it works. We normally think of special relativity as having little bearing on our lives because everything happens at such low speeds that relativistic effects are negligible. But when you consider the large number of charges in a wire and the strength of the electric interaction, you can see that electromagnets function thanks to the special relativistic effect of length contraction. In a frame of reference moving with the charges, there is an electric field that creates a force on the charges. But in the lab frame, there is no electric field so it must be a magnetic field creating the force. Hence we see that a magnetic field is what an electric field becomes when an electrically charged object starts moving. I was inspired to make this video by Prof. Eric Mazur http://mazur.harvard.edu/emdetails.php Huge thank you to Ralph at the School of Physics, University of Sydney for helping us out with all this magnetic gear. Thanks also to geology for loaning the rocks. This video was filmed in the studio at the University of New South Wales - thanks to all the staff there for their time and support. Music: Firefly in a Fairytale, Nathaniel Schroeder, and Love Lost (Instrumental) by Temper Trap licensed from CueSongs.com

The Conquest Continues over on Veritasium: http://bit.ly/VEMagnets_m THANK YOU to our amazing Subbable.com subscribers whose donations help keep MinutePhysics running! Calvin Kennell-Heiling Matthew Joseph Woolley TheTripleBstudios - http://www.youtube.com/TheTripleBstudios Mike Ledermueller Mark Liederbach - https://plus.google.com/112637595591573891595/posts Stephanie Ahlberg-Rosell - scoutingwithmeurr.wordpress.com K. Repking @lifeasasleeper How do magnets work? Why do they attract and repel at long distances? Is it magic? No... it s quantum mechanics, and a bit more, as we explain in this, the longest MinutePhysics video ever. MinutePhysics is on Google+ - http://bit.ly/qzEwc6 And facebook - http://facebook.com/minutephysics And twitter - @minutephysics Minute Physics provides an energetic and entertaining view of old and new problems in physics -- all in a minute! Music by Nathaniel Schroeder http://www.soundcloud.com/drschroeder Additional music by Kevin MacLeod http://www.incompetech.com Created by Henry Reich

Hey guys! Sorry I haven t uploaded in a while because I had to find another editing program! Since it s starting to get chilly in this fall season I made this video showing you how to make your own beanies to stay warm! Follow me on my social medias: http://instagram.com/jenerationdiy# https://twitter.com/JENerationDIY Thanks for watching! Don t forget to like, comment, and subscribe! -Jen

Sign up for the DESIGN SESSIONS here: https://bit.ly/3fAGlT6 Visit the Kinwoven Website: https://bit.ly/kinwoven || Do ALL the Subscribing || Subscribe to This Channel: http://bit.ly/1HQxHwB Subscribe to Sharrah s Channel: http://bit.ly/2ksIyIV Follow Rebecca on Instagram: http://bit.ly/2prycLJ Follow Sharrah on Instagram: http://bit.ly/2NyAMJD Follow Kinwoven on Instagram: https://bit.ly/2SP9Cjg Interior Design, Modern Bedroom, Decorating ideas for Jon s Modern Home Design. With only weeks left before the Interior Design installation of the LaJolla project, San Diego Interior Designer Rebecca Robeson meets up with Mrs. LaJolla as they go through furniture and accessories that have been in storage for 5 years. Rebecca makes decisions on what... if anything they have, can be used in the project. Follow along as they shop together for possible accessories pieces and household items. Meet Tim and Lauren, the couple who won the Furnitureland South $10,000 shopping spree and view their video submission. Take a tour with Rebecca as she see s Jon s home for the first time. Watch Episode #1 http://www.youtube.com/watch?v=YdWmSjTpip4 Watch Episode #2 http://www.youtube.com/watch?v=HoOA_YfoBqo Watch Episode #3 http://www.youtube.com/watch?v=ubbnVsRRbTs Watch Episode #4 http://www.youtube.com/watch?v=ZtcxY7txcjw Watch Episode #5 http://www.youtube.com/watch?v=jNCmCnJ8WV0 Watch Episode #6 http://www.youtube.com/watch?v=KPzsRMCcTBQ Watch Episode #7 http://www.youtube.com/watch?v=fVe24VJRRXY Watch Episode #8 http://www.youtube.com/watch?v=fVe24VJRRXY Interior Design Ideas, Interior Designs, Home Design Ideas, Bedroom Interior, Commercial Interior, Home Decorating, Home Interior, Designs, Shop Interior Design, Villa Interior Design, Bathroom Interior, Residence Interiors, Livingroom Interior, Modern Interior, Diningroom Interior, Kitchen Interior, Bedroom Furniture Set, Dining Room Furniture Set

Check out the new Cabot Premium Wood Finish here: http://www.cabotstain.com/products/product/Premium-Wood-Finish.html or find it exclusively at Lowe s and http://www.lowes.com. For more fun, subscribe to our channel here: http://bit.ly/1HXmip0 Create an organic and rustic design that s sure to take any living space from boring to beautiful! Interior and style guru, Mr. Kate, shows you how to prep, paint, and add pizzaz! Materials: Tarp Mirror Tape Cabot Wood Finish in Cinnamon Toast and Gingersnap Paint Brush Small artists brush Sand paper Rag - Start with a raw wood mirror. If you are using a thrifted mirror, make sure to sand it down first - Tape off the edges so you don t get any finish onto the mirror - Tape off the corners to apply your first color to the top and bottom of the mirror - Using a paint brush, not a rag...apply your first color with long, smooth brush strokes - now pick up the tape in the corners and switch it over to the part you ve already finished (make sure it s dry to the touch before you lay the tape down)...that way you can apply your second color to the sides of the mirror. - apply your second color - pick up the tape and allow the finish to dry for 2 hours - once dry, apply your embellishments in the corners with an artist brush - allow to dry - remove the remaining tape from the mirror and wash your brushes with water and soap Disclaimer: This is a sponsored video but the ideas are my own! Thanks for watching.

Get a closer look at the inspirational design behind Folly Farm in Boulder, CO

In which John Green teaches you about American involvement in World War I, which at the time was called the Great War. They didn t know there was going to be a second one, though they probably should have guessed, cause this one didn t wrap up very neatly. So, the United States stayed out of World War I at first, because Americans were in an isolationist mood in the early 20th century. That didn t last though, as the affronts piled up and drew the US into the war. Spoiler alert: the Lusitania was sunk two years before we joined the war, so that wasn t the sole cause for our jumping in. It was part of it though, as was the Zimmerman telegram, unrestricted submarine warfare, and our affinity for the Brits. You ll learn the war s effects on the home front, some of Woodrow Wilson s XIV Points, and just how the war ended up expanding the power of the government in Americans lives. Hey teachers and students - Check out CommonLit s free collection of reading passages and curriculum resources to learn more about the events of this episode. The complex secret alliances of Europe led to World War I: https://www.commonlit.org/texts/a-mad-dash-to-disaster-the-first-world-war It took several years before Americans joined the war: https://www.commonlit.org/texts/to-the-front-lines-america-in-world-war-i After the war, President Woodrow Wilson wanted to prevent a future World War, and promoted creating a League of Nations, established following the Treaty of Versailles: https://www.commonlit.org/texts/the-treaty-of-versailles-and-the-league-of-nations Chapters: Introduction 00:00 American Involvement in WWI 0:41 The Sinking of the Lusitania 1:53 Why did the U.S. join WWI? 2:42 Mystery Document 3:22 America s Contributions to WWI 5:06 Pro-War Progressives 5:48 How WWI Expanded the U.S. Government s Power 6:08 Propaganda, Public Opinion, and the CPI 7:10 The Espionage Act of 1917 7:57 The Sedition Act 8:34 "Americanization" 9:55 Suppression of Free Speech 10:40 Positive Outcomes of WWI 11:18 The End of WWI 12:17 Credits 13:06 Crash Course is on Patreon! You can support us directly by signing up at http://www.patreon.com/crashcourse Want to find Crash Course elsewhere on the internet? Facebook - http://www.facebook.com/YouTubeCrashCourse Twitter - http://www.twitter.com/TheCrashCourse Instagram - https://www.instagram.com/thecrashcourse/ CC Kids: http://www.youtube.com/crashcoursekids

View full lesson: http://ed.ted.com/lessons/light-waves-visible-and-invisible-lucianne-walkowicz Each kind of light has a unique wavelength, but human eyes can only perceive a tiny slice of the full spectrum -- the very narrow range from red to violet. Microwaves, radio waves, x-rays and more are hiding, invisible, just beyond our perception. Lucianne Walkowicz shows us the waves we can t see. Lesson by Lucianne Walkowicz, animation by Pew36 Animation Studios.

Subscribe - it s FREE! - http://goo.gl/EpIDGd And please support us on Patreon - https://goo.gl/ZVgLQZ Thanks to ScienceAlert for support - http://www.facebook.com/sciencealert And thanks to the following Subbable supporters; they make MinuteEarth a reality! Mike Ledermueller David Smith @JGregory808 - http://jgregory808.tumblr.com/ Myndert Papenhuyzen @WY_Tang - https://twitter.com/WY_Tang MinuteEarth is available as a free iTunes podcast! - http://podcast.minuteearth.com/ We re also on facebook - http://facebook.com/minuteearth And twitter - http://twitter.com/MinuteEarth REFERENCES Pando The World s Largest Organism in Trouble. Week of Feb 1 2013. Living on Earth. http://www.loe.org/shows/segments.html?programID=13-P13-00005&segmentID=7 Grant, M. & Mitton, J. 2010. Case Study: The Glorious, Golden, and Gigantic Quaking Aspen. Nature Education Knowledge 3(10):40 http://www.nature.com/scitable/knowledge/library/case-study-the-glorious-golden-and-gigantic-13261308?ref=nf DeWoody, J. et al. 2008. "Pando" Lives: Molecular Genetic Evidence of a Giant Aspen Clone in Central Utah. Western North American Naturalist, 68(4):493-497. http://www.bioone.org/doi/pdf/10.3398/1527-0904-68.4.493 NYTimes Article, Dec. 21 1992 http://www.nytimes.com/1992/12/21/opinion/hail-to-the-world-s-largest-organism.html Mock, KE., et al. 2012. Widespread Triploidy in Western North American Aspen (Populus tremuloides). PLoS ONE 7(10): e48406. doi:10.1371/journal.pone.0048406 http://www.plosone.org/article/info%3Adoi%2F10.1371%2Fjournal.pone.0048406 Humongous fungus Schmitt, C. and Tatum, M. 2008. The Malheur National Forest: Location of the World s Largest Living Organism [The Humongous Fungus] http://www.fs.usda.gov/Internet/FSE_DOCUMENTS/fsbdev3_033146.pdf Casselman, A. Oct. 4 2007. Strange but True: The Largest Organism on Earth Is a Fungus. Scientific American. http://www.scientificamerican.com/article.cfm?id=strange-but-true-largest-organism-is-fungus Ferguson, BA. et al. 2003. Coarse-scale population structure of pathogenic Armillaria species in a mixed-conifer forest in the Blue Mountains of northeast Oregon. Canadian Journal of Forest Research 33:612-623, 10.1139/x03-065. http://www.nrcresearchpress.com/doi/abs/10.1139/x03-065#.UhIzK2R4ZDw Methods for estimating weight of fungi Smith, M., Bruhn, J., and Anderson, J. 1992. The fungus Armillaria bulbosa is among the largest and oldest living organisms. Nature 356: 428-431. http://joelvelasco.net/teaching/systematics/smith%2092%20-%20humongousfungus.pdf Tallest tree http://www.guinnessworldrecords.com/records-3000/tallest-tree-living/ Howell, E. April 15, 2013. What is the World s Tallest Tree? Livescience. http://www.livescience.com/28729-tallest-tree-in-world.html Krulwich, R. April 8 2011. The World s Tallest Tree Is Hiding Somewhere In California. krulwich wonders. http://www.npr.org/blogs/krulwich/2011/04/08/135206497/the-worlds-tallest-tree-is-hiding-somewhere-in-california MinuteEarth provides an energetic and entertaining view of trends in earth s environment -- in just a few minutes! Created by Henry Reich, with Alex Reich, Peter Reich, Emily Elert, and Ever Salazar. Music by Nathaniel Schroeder: http://www.soundcloud.com/drschroeder

This week Gav blows up a car in slow motion. My favourite part is the bit with the explosion. If you want to see what inspired us to blow this red convertible up, go check out the 2 Guns movie at the links below. Trailer: http://www.youtube.com/watch?v=AK6EbfdnTHg&feature=share&list=PLF4313AE131B74661 Website: http://www.2guns-movie.net Shot with a Phantom Flex at 2500fps Slow Mo Car Explosion - The Slow Mo Guys

In this episode, Hank talks about how nutty our world is via Buffers! He defines buffers and their compositions and talks about carbonate buffering systems in nature, acid rain, pH of buffers, and titration. Plus, a really cool experiment using indicators to showcase just how awesome buffers are. Pssst... we made flashcards to help you review the content in this episode! Find them on the free Crash Course App! Download it here for Apple Devices: https://apple.co/3d4eyZo Download it here for Android Devices: https://bit.ly/2SrDulJ -- Table of Contents Nature is Nutty 0:00 Carbonate Buffering and Acid Rain 0:35 Definition of Buffers 1:47 Composition of Buffers 2:26 pH of Buffers 3:33 Titration 7:43 Carbonate Buffering in Nature 7:12 - Crash Course is on Patreon! You can support us directly by signing up at http://www.patreon.com/crashcourse Want to find Crash Course elsewhere on the internet? Facebook - http://www.facebook.com/YouTubeCrashCourse Twitter - http://www.twitter.com/TheCrashCourse Instagram - https://www.instagram.com/thecrashcourse/ CC Kids: http://www.youtube.com/crashcoursekids

"My Boyfriend Does My Makeup" tag with none other than...my boyfriend, Joey! For more fun, subscribe to our channel here: http://bit.ly/1HXmip0 Shop the new collection! http://www.mrkate.com/shop The Mr. Kate Blog and Shop: http://www.mrkate.com Follow Mr. Kate on Twitter: http://www.twitter.com/mrkate Follow Mr. Kate on Instagram: http://www.instagram.com/mrkate Like Mr. Kate on Facebook http://www.facebook.com/mrkatedotcom Music: royalty free tracks Video shot and edited by Brad Etter

Look at all we learned together! Tweet: http://bit.ly/SED100 - FB http://bit.ly/SED100FB Click Below to Get Info on Posters ⇊ ⇊ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ POSTERS Check out the fundraiser posters we have up at the moment. http://www.ebay.com/sch/smartereveryday/m.html?_nkw=&_armrs=1&_ipg=&_from= ~~~~~~~~~~~~~~~~~~~~~~~~~~~~ GET STUFF SECTION: (If I did this right these should be working Amazon affiliate links to purchase the stuff I like to use. When people purchase from these links it will support Smarter Every Day.) ❓Mystery Item (just for fun): https://amzn.to/3b4WgG8 Things I use and like: 📷Camera I use : https://amzn.to/2VSiruw Favorite Lens: https://amzn.to/2KPDQ1a Wide-angle: https://amzn.to/2SlPchR On-camera Mic: https://amzn.to/3aVVbjz Lav Mic: https://amzn.to/3aRek6r Hot shoe mount for Lav Receiver: https://amzn.to/35m6uAo My Tripod: https://amzn.to/2Yl6RtJ My Multi-tool: https://amzn.to/2zGm5Pz Favorite SD Card: https://amzn.to/2KQ3Edz 💾How I get footage off my phone: https://amzn.to/2KMem4K Travel Tripod: https://amzn.to/2zEa9Oi My Backpack: https://amzn.to/35jveJL My Headlamp: https://amzn.to/3deYmVt Favorite Bidet: https://amzn.to/2xnMG3b World Map: https://amzn.to/3aTFCZT Favorite Shoes: https://amzn.to/3f5trfV Everyone needs a snatchblock: https://amzn.to/2DMR4s8 🥽Goggle Up! : https://amzn.to/2zG754g Also, if you’re interested in a Smarter Every Day shirt etc. they’re really soft and you can get there here: https://www.smartereveryday.com/store ~~~~~~~~~~~~~~~~~~~~~~~~~~~~ (Populating more auctions now) Here s the list of all 99 Smarter Every Day Episodes in order http://bit.ly/SEDList Tweet ideas to me @SmarterEveryDay ♬♬♬♬♬♬♬♬♬♬♬♬♬♬♬♬♬♬♬♬♬ I recommend wearing headphones for this video ☊ Like Gordon s music? Download it here: http://ashellinthepit.bandcamp.com/ This particular song was "Bottles" http://ashellinthepit.bandcamp.com/track/bottles ♬♬♬♬♬♬♬♬♬♬♬♬♬♬♬♬♬♬♬♬♬ Andrew Jackson does the captions. Believe it or not, he lives with a cat who has a blog. http://dylanmeow.wordpress.com The following guys helped me by sorting through all 100 episodes to find the best clips. This saved me an incredible amount of time and for that I am very thankful. Sean Farbolin Brian McManus Dhruv Joshi Ben Lloyd Justin Wilkes Arthur Scott ~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Instead of saving for my kids college, I make videos using the money I would have saved. The thought is it will help educate the world as a whole, and one day generate enough revenue to pay for their education. Until then if you appreciate what you ve learned in this video and the effort that went in to it, please SHARE THE VIDEO! If you REALLY liked it, feel free to pitch a few dollars towards their college fund by clicking here: http://bit.ly/KidsCollege Warm Regards, Destin

This is a really old video that I switched to Private years ago because Smoking is wrong. For the 100 episode I made it live again and YT redistributed it. Sorry for the confusion. SMOKING IS WRONG. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~ GET STUFF SECTION: (If I did this right these should be working Amazon affiliate links to purchase the stuff I like to use. When people purchase from these links it will support Smarter Every Day.) ❓Mystery Item (just for fun): https://amzn.to/2WwQAiS Things I use and like: 📷Camera I use : https://amzn.to/2VSiruw Favorite Lens: https://amzn.to/2KPDQ1a Wide-angle: https://amzn.to/2SlPchR On-camera Mic: https://amzn.to/3aVVbjz Lav Mic: https://amzn.to/3aRek6r Hot shoe mount for Lav Receiver: https://amzn.to/35m6uAo My Tripod: https://amzn.to/2Yl6RtJ My Multi-tool: https://amzn.to/2zGm5Pz Favorite SD Card: https://amzn.to/2KQ3Edz 💾How I get footage off my phone: https://amzn.to/2KMem4K Travel Tripod: https://amzn.to/2zEa9Oi My Backpack: https://amzn.to/35jveJL My Headlamp: https://amzn.to/3deYmVt Favorite Bidet: https://amzn.to/2xnMG3b World Map: https://amzn.to/3aTFCZT Favorite Shoes: https://amzn.to/3f5trfV Everyone needs a snatchblock: https://amzn.to/2DMR4s8 🥽Goggle Up! : https://amzn.to/2zG754g Also, if you’re interested in a Smarter Every Day shirt etc. they’re really soft and you can get there here: https://www.smartereveryday.com/store ~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Post on Facebook! - http://on.fb.me/LaserLight Ask Destin a question via Twitter- http://bit.ly/AskDestin This video involves laser that can instantly blind us, and cigarettes that cause lung cancer. Like our Facebook page and suggest stuff! - http://on.fb.me/SED-Facebook Exploring the opacity of balloons with a laser classified as a fire hazard. Johan s Website: http://bluefan.nl translation: 0:40 - 0:46 -What must I do now? Should I also take a (inaudible) or just hold it in front of it. 0:50 - 1:15 -Somwhat further away. here or somthing. here yeah. here it is. -should I lift it now? -keep it in the middle. -should I lift it. should I now just lift it. -Yes go ahead. Like the song? Download it here: http://ashellinthepit.bandcamp.com Need music? Contact A Shell in the Pit here: http://ashellinthepit.com/contact.htm Post op Facebook! - http://on.fb.me/LaserLight Vind onze Facebook pagina leuk and geef suggesties! - http://on.fb.me/SED-Facebook Het onderzoeken van de absorbtie van ballonnen met een brandgevaarlijke laser. Johan s Website: http://bluefan.nl Leuke muziek? Download die hier: http://ashellinthepit.bandcamp.com Muziek nodig?? Je kan A Shell in the Pit hier bereiken: http://ashellinthepit.com/contact.htm

View full lesson: http://ed.ted.com/lessons/urbanization-and-the-future-of-cities-vance-kite About 10,000 years ago, hunter-gatherers, aided by rudimentary agriculture, moved to semi-permanent villages and never looked back. With further developments came food surpluses, leading to commerce, specialization and, many years later with the Industrial Revolution, the modern city. Vance Kite plots our urban past and how we can expect future cities to adapt to our growing populations. Lesson by Vance Kite, animation by ATMG Studio.

Learn about the science of stem cells and how these incredible, transforming cells could lead to personalized medicine for individual bodies. -- Is personalized medicine for individual bodies in our future? Possibly -- with the use of stem cells, undifferentiated cells with the power to become any tissue in our bodies. Craig A. Kohn describes the role of these incredible, transforming cells and how scientists are harnessing their medical potential. Lesson by Craig A. Kohn, animation by Qa ed Mai. Sign up for our newsletter: http://bit.ly/TEDEdNewsletter Support us on Patreon: http://bit.ly/TEDEdPatreon Follow us on Facebook: http://bit.ly/TEDEdFacebook Find us on Twitter: http://bit.ly/TEDEdTwitter Peep us on Instagram: http://bit.ly/TEDEdInstagram View full lesson: http://ed.ted.com/lessons/what-are-stem-cells-craig-a-kohn

In this episode, Hank goes over Reversible Reactions, the water dissociation constant, what pH and pOH actually mean, Acids, Bases, and Neutral Substances as well as the not-so-terrifying Logarithms, strong acids, weak acids, and how to calculate pH and pOH. Oh, and litmus paper! Pssst... we made flashcards to help you review the content in this episode! Find them on the free Crash Course App! Download it here for Apple Devices: https://apple.co/3d4eyZo Download it here for Android Devices: https://bit.ly/2SrDulJ -- Table of Contents Reversible Reactions 3:40 Water Dissociation Constant 5:00 Acids, Bases, & Neutral Substances 6:38 Strong and Weak Acids 7:43 Logarithms 1:46 Calculating pH and pOH 8:45 Cool Mathematical Connections 9:54 Crash Course is on Patreon! You can support us directly by signing up at http://www.patreon.com/crashcourse Want to find Crash Course elsewhere on the internet? Facebook - http://www.facebook.com/YouTubeCrashCourse Twitter - http://www.twitter.com/TheCrashCourse Instagram - https://www.instagram.com/thecrashcourse/ CC Kids: http://www.youtube.com/crashcoursekids

Subscribe - it s FREE! - http://goo.gl/EpIDGd And please support us on Patreon - https://goo.gl/ZVgLQZ MinuteEarth is available as a free iTunes podcast! - http://podcast.minuteearth.com/ We re also on facebook - http://facebook.com/minuteearth And twitter - http://twitter.com/MinuteEarth REFERENCES Faraday suits/linemen: http://science.howstuffworks.com/faraday-cage3.htm Human body tissues resistivity: http://www.ncbi.nlm.nih.gov/pubmed/10593226 conductivity of lightning channel: http://iopscience.iop.org/1402-4896/80/3/035901 US soil resistivity: http://www.rurdev.usda.gov/SupportDocuments/UTP_Bulletins_1751F-802.pdf MinuteEarth provides an energetic and entertaining view of trends in earth s environment -- in just a few minutes! Created by Henry Reich, with Alex Reich, Peter Reich, Emily Elert, and Ever Salazar. Music by Nathaniel Schroeder: http://www.soundcloud.com/drschroeder

PBS Member Stations rely on viewers like you. To support your local station, go to: http://to.pbs.org/DonateOKAY ↓ More info and sources below ↓ Why do we build monuments? And what are they made of? Click here to SUBSCRIBE -- http://bit.ly/iotbs_sub I took a trip to Washington D.C. to check out some of our nation s most famous monuments. Where do they come from? From the depths of the Earth to the distant reaches of the cosmos, you ll never look at history the same way again. Music "Over the River and Through the River" - Father Sleep Written and hosted by Joe Hanson Produced by PBS Digital Studios: http://www.youtube.com/user/pbsdigitalstudios ----------- Join us on Patreon! https://patreon.com/itsokaytobesmart Twitter http://www.twitter.com/DrJoeHanson http://www.twitter.com/okaytobesmart Instagram http://www.instagram.com/DrJoeHanson http://www.instagram.com/okaytobesmart Merch https://store.dftba.com/collections/its-okay-to-be-smart Facebook https://www.facebook.com/itsokaytobesmartpbs/